/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jbpm.jpdl.internal.activity;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.jbpm.api.Execution;
import org.jbpm.api.JbpmException;
import org.jbpm.api.activity.ActivityExecution;
import org.jbpm.pvm.internal.model.Activity;
import org.jbpm.pvm.internal.model.ActivityImpl;
import org.jbpm.pvm.internal.model.ExecutionImpl;
import org.jbpm.pvm.internal.model.Transition;
/**
* @author Tom Baeyens
*/
public class GroupActivity extends JpdlExternalActivity {
private static final long serialVersionUID = 1L;
public void execute(ActivityExecution execution) {
execute((ExecutionImpl)execution);
}
public void execute(ExecutionImpl execution) {
// find the start activity
Activity activity = execution.getActivity();
List<Activity> startActivities = findStartActivities(activity);
if (startActivities.size()==1) {
execution.execute(startActivities.get(0));
} else {
ExecutionImpl concurrentRoot = null;
if (Execution.STATE_ACTIVE_ROOT.equals(execution.getState())) {
concurrentRoot = execution;
} else if (Execution.STATE_ACTIVE_ROOT.equals(execution.getState())) {
concurrentRoot = execution.getParent();
} else {
throw new JbpmException("illegal state");
}
for (Activity startActivity: startActivities) {
ExecutionImpl concurrentExecution = concurrentRoot.createExecution();
concurrentExecution.setState(Execution.STATE_ACTIVE_CONCURRENT);
concurrentExecution.execute(startActivity);
}
}
}
private List<Activity> findStartActivities(Activity activity) {
List<Activity> startActivities = new ArrayList<Activity>();
List nestedActivities = activity.getActivities();
for (ActivityImpl nestedActivity : (List<ActivityImpl>) nestedActivities) {
if ( (nestedActivity.getIncomingTransitions()==null)
|| (nestedActivity.getIncomingTransitions().isEmpty())
) {
startActivities.add(nestedActivity);
}
}
return startActivities;
}
public void signal(ActivityExecution execution, String signalName, Map<String, ?> parameters) throws Exception {
signal((ExecutionImpl)execution, signalName, parameters);
}
public void signal(ExecutionImpl execution, String signalName, Map<String, ?> parameters) throws Exception {
Transition transition = null;
Activity activity = execution.getActivity();
List<Transition> outgoingTransitions = activity.getOutgoingTransitions();
int nbrOfOutgoingTransitions = (outgoingTransitions!=null ? outgoingTransitions.size() : 0);
if ( (signalName==null)
&& (nbrOfOutgoingTransitions==1)
) {
transition = outgoingTransitions.get(0);
} else {
transition = activity.getOutgoingTransition(signalName);
}
execution.take(transition);
}
}